Improvement in shutter-fasteners



ITNITED STATES PATENT GEEICE.

JOHN F. SMITH, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN SHUTTER-FASTENERS.

E Specification forming part of Letters Patent No. 119,479, datedOctober 3, 1871; antedated September 16, 1871.

To all whom itvmafy concern:

Be it known that I, JOHN F. SMITH, of Boston, in the county of Suffolkand State of Massachusetts, have invented a new and Improved Blind-Fastener and Opener, of which the following, when taken in connectionwith the accompanying drawing, is a full and exact specification.

My invention consists of an arrangement, fully described below, in whichthe -blind is kept securely closed by means of a staple which catches ina hook placed in the blind. Upon releasing this staple a concealedspring sends the blind quickly back against the house. There are variousadvantages in this invention, all of which are fully set forth below.

In the accompanying drawing, Figure l is a sketch of my invention,showing the blind in the act of flying back. Fig. 2 is a section of thelower part of the blind, showing the position of the staple when connedin the hook. Fig. 3 represents the staple which holds the blind whenshut. Fig. 4 represents the staple which secures the blind Ywhen open.

the blind upon the house, but which is not a part of my invention.

In practical operation my invention works as follows: Taking the blindas it is found in Fig. 1, in order to close it I reach out my hand andpull it forcibly toward the window until the hook j' snaps over thestaple cl. To open the blind I simply press the hook f, closing thespring, when, the staple d releasing thehook f and the spring e actingupon the blind a, the blind iiies quickly back and snaps the hook j'over the staple g, conning the blind in place at the side of the house.

The following are some of the advantages my invention affords which arenot common to blinds manufactured in the ordinary manner: No screws arerequired in attaching the fastener and opener.

VThe blind cannot be opened from the outside, as

it fits closely to the sill. It is self-opening. The hand is not obligedto extend outside the window, and the window itself need not be openedmore than two or three inches. This is especially advantageous in caseof stormy weather. All noise and rattling are avoided when the blind isshut by the pressure of the spring e. The exertion rei quired in openingthe blind is so slight that a child can operate it without anydificulty.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, 1s-

The combination and arrangement of the spring c, staple d., and hooksf,as and for the purposes hereinbefore described.

JOHN F. SMITH.

Witnesses:

HENRY W. WILLIAMS, WILLIAM H. MUNROE.

